Pipe-wrench.



No. 855,380. XJATENTED MAY 2a, 190'7 E. c. BATES.

PIPE WRENCH.

APPLICATION FILED 11,511.12. 1907.

2 sums-SHEET 1,

No. 355,380. l' PATENTE) MAY 28, 1907.

f E. C. BATES.

4Pme WRENCH.

APPLICATION FILED MAB.. 12, 1907.

2 SHEETS-SHEBT 2.

www@ e. 53M, m7 my muti Q' www 'www ybetween them, and they the screw-journal 14. The j atv-plates are laterally spaced apart to permit the chain and its extended pivot-pins to enter freely are preferably joinedv together below the end of the handlebar as by means of the connecting post or screw 15``so that they will be held opposite to each other' and will operate in unison. The concavity of each jaw-plate is preferably formed V-sliaped, as shown, and is also provided with the serrations 16, so that the two plates together form a shoe adapted to bear and. bite against the side of pipes of various diameters.

The flexing-lugs 17 are formed or attached adjacent to the edges of the handle-bar and ,they are preferably located opposite a point below the pivot of the bearing-shoe. As shown, these lugs are formed integral with the handle-bar to which they are joined by the Webs 18 extending from one side of the edges thereof, thus forming free channels, open on one side, between the end of the ,handle-bar and the adjacent lugs, in which channels the chain is adapted to be freely entered and to operate.

The parts of the Wrench are so proportioned and arranged that when it is applied to a pipe and the free end of the chain is engaged with the connecting-.hooks and the andle-bar is held in a radial position with reference to the pipe, as shown in Fig. 2, the ilexing lugs will onl .be in slight if any lpressing contact with tie adjoining or adjacent portions of the chain. ln this relation of the parts, the grip of the Wrench on the pipe is so slight that it may be moved along the pipe, or rotated thereon to any desired position or for thev urpose of taking a new grip on the pipe. lgut when the handle-bar is rotated on the shoe-pivot, either one way, as shown in Fig. 1, or the other Way, as shown in Figl 3, the lug adjacent to the edge toward which the bar is inclined impinges the outer side of the adjacent or adjoining part of the chain, and by flexing the same forces it inward` thus positively tightening its tension around the pipe and at the same time increasing the cireumferential contact of the chain thereon. While the rotation of the handle-bar from its normal radial position causes one lug to Hex the chain, the opposite lug is at the same time drawn away from the adjoining or adjacent art of the chain, so that the chain is never rawn outward to lessen its circumferential contact on that side of the pipe.

' The end of the handle-bar may be rounded on a circle concentric with the shoe-pivot, as-

" shown in Figs; 1, 2, 3 and 5, or it may be tapered as shown in Figs. 7 and 8; and the chain on the sidel that is not im inged will either roll around the end of the andle-bar "as on a reel in the first case and thus increase its tension around the pipe, or will assume a straight line between the side of the pipe and connecting-hooks in the latter case. The

chain will never be carried outward to lessen its circumferential contact with the pipe in either case and alter the chain is free from the outwardly moving flexing-lug, any further rotation oi' the handle-bar will carry the handle-bar and the flexing-lug on the opposite side of the bar is freely exposed outside the edge of the bearing-shoe, whereupon the free end, of the chain can then be entered in this channel, shown by broken lines in Fig. 1. The chain can. then be drawn approximately taut, as shown by broken lines in Fig. 2, and engaged with the connectinghooks, as shown by full lines in the same ligure. As the connection of the free end of' the chain with the hooks can only be made at intervals correspondinY with the pitch of the chain, any undesirable slack there may be in the chain after it is thus connected, can be readily taken up, by merely giving the thumb-nut on the adjustine-bolt a few turns in the proper direction. ,lt is also evident that the wrench can be readily removed from 'the pipe by merely reversing the method described above for applying it.

What I claim as my invention, and desire to secure by Letters Paten t, is

1. wrench comprising a handle-bar, a bearing-shoe pivoted on the end of' the ba-r, a ilexible member forming a loop on the same end of tne bar and having one end adj `istably attached on one edge of the bar and detachably connected on the other edge of the bar, and lugs on the bar outside the flexible mem-. her and adapted to fiex the same inward when the bar is rotated one way or the other on the shoe-pivot.

2. A wrench comprising a handle-bar, a bearing-shoe pivoted on the end of the 'bar7 a liexible member forming a loop on the same end of the bar and having one end attached on one edge of the bar and detachably connected on the other edge of the bar, and lugs on the b'ar outside the flexible member and adapted to lex the same inward when the bar is rotated one way or the other onl the shoe-pivot.

3. A wrench comprising a handle-bar, a bearing-shoe pivoted on the end of the bar, a flexible member forming a loop on the same end of the bar and having one end ad justably lattached on one edge of the bar and connecteseeo ed on the other edge ol" the har, and inge on he bar outside he flexible member and` adapted ie iiex the same inward when the har is rotated one way or the other on the shoe-inver.

4. A "wreneh comprising a handle-l ar having a tapered end, a bearing-Shoe pivot-ed en the to llrx Ythe same inward When the bar is rotated one Way or the other on the shoe-pivot. i meneh comprising a handle-bar, a hearing-shoe pivoted on the end of the bar, a

llexible member forming a loop on the same end of the har and connected on the edges thereof, and lugs on the bar outside the exii hie-member adapted to flex the same .inward 'when the bar is rotated one way or lche other on the shoe-pivot.

6. A Wrench comprising a handle-bar havy ing a tapered end, a hearing-shoe pivoted on the-same end of the bar, a flexible member forming a loop on the saine end of the bar saine ehd of the har, a flexible member l forming' a loep on the saine end or' the har and connected on the edges thereof, and lugs on the bar outside the flexible-member adapted j and having its ends Connected therr-vdth-y and a lug on the edge of the bar outside the fierihie-member and adapted to `flex the same 1ni Ward by the rotation el the har on the shoepivot.

i 7; A Wrench comprising a handle-har, a i hearing shoe pivoted on the end of the bar, a 1 vile\ible mernher forming a loop on the same i end of the har and having its ends connected l therewith, and a lug on the edge of the har i outside the flexible-member and adapted to l Ilex the same inward by the rotation of the j har on the shoe-pivot.

l' 8,'111 a wrench having a handle-bar with a I bearing-shoe pivoted on the end thereof, an i end'wise adjustable-bolt on one edge of the l bar, and a lexible member forming a loop on f the sarne end of the bar and having one end i attached to the bolt with means for detaclv l ably connecting the other end to the opposite edge of the bar.-

Q EDMUND C. BATES.

I `Witnessesz i HARRY FREASE,

l MARY A. CAVANAUGH. 

